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/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. *
* *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
* *
********************************************************************
function: modified discrete cosine transform prototypes
********************************************************************/
#ifndef _OGG_mdct_H_
#define _OGG_mdct_H_
#ifdef _LOW_ACCURACY_
# define X(n) (((((n)>>22)+1)>>1) - ((((n)>>22)+1)>>9))
# //define LOOKUP_T const unsigned char
#else
# define X(n) (n)
# //define LOOKUP_T const ogg_int32_t
#endif
#ifdef ROCKBOX
#include <codecs.h>
#endif /* ROCKBOX */
#include "codeclib_misc.h"
#ifndef ICONST_ATTR_TREMOR_WINDOW
#define ICONST_ATTR_TREMOR_WINDOW ICONST_ATTR
#endif
#ifndef ICODE_ATTR_TREMOR_MDCT
#define ICODE_ATTR_TREMOR_MDCT ICODE_ATTR
#endif
#ifndef ICODE_ATTR_TREMOR_NOT_MDCT
#define ICODE_ATTR_TREMOR_NOT_MDCT ICODE_ATTR
#endif
#ifdef _LOW_ACCURACY_
#define cPI3_8 (0x0062)
#define cPI2_8 (0x00b5)
#define cPI1_8 (0x00ed)
#else
#define cPI3_8 (0x30fbc54d)
#define cPI2_8 (0x5a82799a)
#define cPI1_8 (0x7641af3d)
#endif
extern void mdct_backward(int n, int32_t *in, int32_t *out);
#endif
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